Born on January 29, 1938, in Tondo, Manila, Myrna Castillo began her journey in show business at a young age. She started performing in bodabil, a type of variety show that was extremely popular in the Philippines during the 1950s and 1960s. Her talent, charisma, and infectious energy quickly made her a standout star, earning her a permanent spot in the cast of "Panaginip," a hit bodabil show.